Quantifying flooding effects on hardwood seedling survival and growth for bottomland restoration (original) (raw)
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EVALUATING THE FLOOD TOLERANCE OF BOTTOMLAND HARDWOOD ARTIFICIAL REPRODUCTION
We experimentally compared the survival and growth after flooding of six bottomland species: eastern cottonwood (cuttings) (Populus deltoides artr. Ex Marsh.), pin oak (Quercus palustris Muenchh.), swamp white oak (Q. bicolor Willd.), bur oak (Q. macrocarpa Michx.), black walnut (Juglans nigra L.), and pecan [Carya illinoensis (Wangenh.) K. Koch]. Flood treatments (5-week flowing, 5-week stagnant, 3-week flowing, and control) were initiated in May, 2004, and plants were evaluated in September. Cottonwood maintained high survival and growth but had a significant basal diameter growth reduction with increased flood duration. Swamp white oak and pin oak each had greater survival than cottonwood, exceeding 95 percent regardless of treatment. Swamp white oak maintained high growth, regardless of treatment. lthough not significant, pin oak and pecan had high survival but reduced growth and bur oak and black walnut had both reduced survival and growth with increased flood duration.
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